WWUS75 KSLC 091655 NPWSLC URGENT - WEATHER MESSAGE National Weather Service Salt Lake City UT 1055 AM MDT Thu Jul 9 2026 UTZ101>108-114-116-118>121-100900- /O.UPG.KSLC.XH.A.0001.260711T1800Z-260713T0300Z/ /O.NEW.KSLC.XH.W.0001.260711T1800Z-260714T1200Z/ Great Salt Lake Desert and Mountains-Tooele and Rush Valleys- Eastern Box Elder County-Northern Wasatch Front-Salt Lake Valley- Utah Valley-Cache Valley/Utah Portion-Wasatch Back-Western Uinta Basin-Eastern Juab/Millard Counties-Sanpete Valley-Sevier Valley- Castle Country-San Rafael Swell- Including the following locations - Green River, Salina, Lehi, Emery, Richfield, Vernon, Huntsville, Logan, Snowville, Park City, Brigham City, Smithfield, Grantsville, Ephraim, Goblin Valley, Nephi, Tooele, Duchesne, Payson, Roosevelt, Provo, Manti, Scipio, Heber City, Sandy, Wendover, Ogden, Park Valley, Salt Lake City, Bountiful, Price, Fillmore, Castle Dale, Dugway, Mt Pleasant, and West Jordan 1055 AM MDT Thu Jul 9 2026 ...EXTREME HEAT WARNING IN EFFECT FROM NOON SATURDAY TO 6 AM MDT TUESDAY... * WHAT...Dangerously hot conditions with temperatures up to 105 possible for the valleys of northern Utah, including the Wasatch Front and Cache Valley. Highs around 100 possible for the mountain valleys of northern and central Utah, including the Wasatch Back, along Castle Country, the Uinta Basin, and the San Rafael Swell. * WHERE...Portions of central and northern Utah. * WHEN...From noon Saturday to 6 AM MDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...There is high confidence that temperatures will warm to values challenging daily and monthly high temperature records Saturday and Sunday afternoons as high pressure builds. Overnight lows in the lower to mid 70s for many valley locations will provide little in the way of overnight relief. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ UTZ115-122-128>131-100900- /O.UPG.KSLC.XH.A.0001.260711T1800Z-260713T0300Z/ /O.NEW.KSLC.XH.W.0001.260711T1800Z-260713T1200Z/ Western Millard and Juab Counties-Southwest Utah-South Central Utah-Capitol Reef National Park and Vicinity-Western Canyonlands- Glen Canyon Recreation Area/Lake Powell- Including the following locations - Hanksville, Little Sahara, Delta, Milford, Big Water, Cedar City, Escalante, Beaver, Loa, Kanab, Bullfrog, and Torrey 1055 AM MDT Thu Jul 9 2026 ...EXTREME HEAT WARNING IN EFFECT FROM NOON SATURDAY TO 6 AM MDT MONDAY... * WHAT...Dangerously hot conditions expected, with highs around 100 possible for most central and southern Utah valleys and up to 110 for Lower Washington County and Glen Canyon Recreation Area. * WHERE...Western Millard and Juab Counties, Capitol Reef National Park and Vicinity, Glen Canyon Recreation Area/Lake Powell, South Central Utah, Western Canyonlands, and Southwest Utah. * WHEN...From noon Saturday to 6 AM MDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.* ADDITIONAL DETAILS...There is high confidence that temperatures will warm to values challenging daily and monthly high temperature records Saturday and Sunday afternoons as high pressure builds. Overnight lows in the lower to mid 70s for many valley locations, except low 80s for lower Washington County, will provide little in the way of overnight relief. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ WYZ021-100900- /O.NEW.KSLC.HT.Y.0002.260712T1800Z-260714T0300Z/ Southwest Wyoming- Including the following locations - Lyman and Evanston 1055 AM MDT Thu Jul 9 2026 ...HEAT ADVISORY IN EFFECT FROM NOON SUNDAY TO 9 PM MDT MONDAY... * WHAT...Temperatures up to 98 expected. * WHERE...Southwest Wyoming. * WHEN...From noon Sunday to 9 PM MDT Monday. * IMPACTS...Hot temperatures may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/saltlakecity. For information on potential travel impacts visit http://udottraffic.utah.gov BW